"""
9*9 乘法
"""
i = 1
while i <= 9:
    j = 1
    while j <= i:
        print(f"{j}*{i}={j * i}\t", end="")
        j += 1
    i += 1
    print()

for i in range(1,10):
    for j in range(1,i+1):
        print(f"{j}*{i}={j * i}\t", end="")
    print()

name = "中国欢迎你"
for x in name:
    print(x)

for x in range(10):
    print(x)

for x in range(5,10):
    print(x)
# 步长
for x in range(5,10,2):
    print(f"步长{x}")